DATASHEET EL7534 FN7431 Rev 8.00 Monolithic 600mA Step-Down Regulator July 12, 2006 The EL7534 is a synchronous, integrated FET 600mA step- Features down regulator with internal compensation. It operates with 2 2 Less than 0.15 in (0.97 cm ) footprint for the complete an input voltage range from 2.5V to 5.5V, which 600mA converter accommodates supplies of 3.3V, 5V, or a Li-Ion battery source. The output can be externally set from 0.8V to V Components on one side of PCB IN with a resistive divider. Max height 1.1 mm MSOP10 The EL7534 features PWM mode control. The operating 100ms Power-On-Reset output (POR) frequency is typically 1.5MHz. Additional features include a Internally-compensated voltage mode controller 100ms Power-On-Reset output, <1A shut-down current, short-circuit protection, and over-temperature protection. Up to 94% efficiency The EL7534 is available in the 10 Ld MSOP package, <1A shut-down current 2 making the entire converter occupy less than 0.15 in of Overcurrent and over-temperature protection PCB area with components on one side only. Both packages Pb-free plus anneal available (RoHS compliant) are specified for operation over the full -40C to +85C temperature range. Applications Ordering Information PDA and pocket PC computers PART PART TAPE & PKG. Bar code readers NUMBER MARKING REEL PACKAGE DWG. Cellular phones EL7534IY BPAAA - 10 Ld MSOP MDP0043 Portable test equipment EL7534IY-T7 BPAAA 7 10 Ld MSOP MDP0043 Li-Ion battery powered devices EL7534IY-T13 BPAAA 13 10 Ld MSOP MDP0043 Small form factor (SFP) modules EL7534IYZ BGAAA - 10 Ld MSOP MDP0043 (Note) (Pb-free) Typical Application Diagram EL7534IYZ-T7 BGAAA 7 10 Ld MSOP MDP0043 EL7534 (Note) (Pb-free) TOP VIEW EL7534IYZ-T13 BGAAA 13 10 Ld MSOP MDP0043 V V (2.5V to 5.5V) L O (Note) (Pb-free) S 1 VIN LX 1.8H NOTE: Intersil Pb-free plus anneal products employ special Pb-free R 100 3 C 1 material sets molding compounds/die attach materials and 100% matte VDD 10F tin plate termination finish, which are RoHS compliant and compatible C C 2 3 with both SnPb and Pb-free soldering operations. Intersil Pb-free 10F 0.1F EL7534 products are MSL classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020. R 100k 5 R * 1 POR 124k C 4 Pinout EN FB 470pF R 100k 4 RSI R * 2 EL7534 (10 LD MSOP) 100k TOP VIEW R 6 100k PGND 1 SGND FB 10 SGND VO (1.8V 600mA) 2 PGND VO 9 3 LX POR 8 * V = 0.8V * (1 + R / R ) O 1 2 4 VIN EN 7 5 VDD RSI 6 FN7431 Rev 8.00 Page 1 of 9 July 12, 2006EL7534 Absolute Maximum Ratings (T = 25C) A V , V , POR to SGND -0.3V to +6.5V Operating Ambient Temperature -40C to +85C IN DD LX to PGND -0.3V to (V + +0.3V) Storage Temperature -65C to +150C IN RSI, EN, V , FB to SGND . -0.3V to (V + +0.3V) Junction Temperature +125C O IN PGND to SGND . -0.3V to +0.3V Peak Output Current . 800mA CAUTION: Stresses above those listed in Absolute Maximum Ratings may cause permanent damage to the device. This is a stress only rating and operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. IMPORTANT NOTE: All parameters having Min/Max specifications are guaranteed. Typ values are for information purposes only. Unless otherwise noted, all tests are at the specified temperature and are pulsed tests, therefore: T = T = T J C A Electrical Specifications V = V = V = 3.3V, C1 = C2 = 10F, L = 1.8H, V = 1.8V, unless otherwise specified. DD IN EN O PARAMETER DESCRIPTION CONDITIONS MIN TYP MAX UNIT DC CHARACTERISTICS V Feedback Input Voltage 790 800 810 mV FB I Feedback Input Current 250 nA FB V , V Input Voltage 2.5 5.5 V IN DD V Minimum Voltage for Shutdown V falling 2 2.2 V IN,OFF IN V Maximum Voltage for Startup V rising 2.2 2.4 V IN,ON IN I Supply Current PWM, V = V = 5V 400 500 A DD IN DD EN = 0, V = V = 5V 0.1 1 A IN DD R PMOS FET Resistance V = 5V, wafer test only 70 100 m DS(ON)-PMOS DD R NMOS FET Resistance V = 5V, wafer test only 45 75 m DS(ON)-NMOS DD I Current Limit 1.5 A LMAX T Over-temperature Threshold T rising 145 C OT,OFF T Over-temperature Hysteresis T falling 130 C OT,ON I , I EN, RSI Current V , V = 0V and 3.3V -1 1 A EN RSI EN RSI V , V EN, RSI Rising Threshold V = 3.3V 2.4 V EN1 RSI1 DD V , V EN, RSI Falling Threshold V = 3.3V 0.8 V EN2 RSI2 DD V Minimum V for POR, WRT Targeted V rising 95 % POR FB FB V Value FB V falling 86 % FB V POR Voltage Drop I = 5mA 35 70 mV OLPOR SINK AC CHARACTERISTICS F PWM Switching Frequency 1.4 1.5 1.75 MHz PWM t Minimum RSI Pulse Width Guaranteed by design 25 50 ns RSI t Soft-start Time 650 s SS t Power On Reset Delay Time 80 100 120 ms POR FN7431 Rev 8.00 Page 2 of 9 July 12, 2006